Shin Min Daily News reproduced the entire email. In it, the man identifies himself as Ken Ong and writes about how he had been suffering and silently bearing his and his wife's burdens, but in exchange, he "gets her lies, empty promises and betrayals".

He said he had been living with his wife, Madam Karen Koh, 39, for 12 years but they were in the midst of a divorce. According to records, the couple have been married since Oct, 2008.

He talked about how he had gone back to study at the Building and Construction Authority's BCA Academy and that it had been stressful.

He said he commutes four hours to and fro daily and ensures that he attends every class even if it was only for an hour or two.

"I sleep only four to six hours a day, the rest of my day is spent studying and I have no time for entertainment like watching TV," he wrote.

Ong also said that studying at 36 years old after stopping studies for about 18 years, and also having to compete with the elites from China to be top of the cohort, is not a joke.